Research on Rapid Shaped-Charge Cutting Technology of Aircraft Damaged Thin-Wall Structures

Cui, Aiyong; Fangyou, Hu; Wei, Hongbo; Liu, H. D.; Wang, Z.; Dong, X. L.

doi:10.1007/s11223-016-9737-4

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Explosive working is a material processing method that relies on explosive detonation's high-speed and high-pressure impact to carry out plastic forming, surface modification, and metallurgical bonds between metals [1]. e common explosive working methods include explosive strengthening [2][3][4], explosive welding [5][6][7], explosive compaction [8,9], explosive cutting [10][11][12], detonation synthesis [13,14], and so on. Explosion working is often carried out outdoors.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response and Parametric Studies of Elliptical Blast‐Resistant Door with the Combined Structure for Large Vacuum Explosion Containers

Cheng

Wang

et al. 2021

Shock and Vibration

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In recent years, with the improvement of environmental protection requirements year by year and the continuous expansion of explosive working scale, higher standards have been put forward for explosive working. It is hoped that the sphere of influence of the explosion can be limited to a minimal range. The explosion vessel is driven by such demand. As the explosion vessel’s key component, studying the blast-resistant door in depth is of great significance. This paper introduces a new elliptical blast-resistant door with the combined structure (EBD), mainly welded with an elliptical panel, arc support plate, and triangle support plate. The finite element program AUTODYN was used to calculate the explosion load, and LS-DYNA was used to calculate the blast-resistant door’s dynamic response. The calculation results show that the newly proposed EBD’s blast-resistance capacity is better than that of the traditional structure. To further study the factors that affect the dynamic response of the EBD, a parametric study was carried out on the EBD, mainly analyzing the influence of the vacuum degree in the explosion vessel, the number of explosives, and the diameter ratio of the EBD. The parametric calculation results show that reducing the vacuum degree in the explosion vessel and the number of explosives during explosion working can improve the blast-resistance capacity of the EBD. Based on the analysis of the dynamic response of four kinds of EBD with different diameter ratios under 0.2 atm explosion load, the optimal diameter ratio of the EBD is given.

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Section: Introductionmentioning

confidence: 99%

Dynamic Response and Parametric Studies of Elliptical Blast‐Resistant Door with the Combined Structure for Large Vacuum Explosion Containers

Cheng

Wang

et al. 2021

Shock and Vibration

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The effect of explosive percentage on underwater explosion energy release of hexanitrohexaazaisowurtzitane and octogen based aluminized explosives

et al. 2018

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To control the explosion energy output by optimizing explosive components is a key requirement in a number of different application areas. The effect of different Al/O Ratio on underwater explosion of aluminized explosives has been studied detailedly. However, the effect of explosive percentage in the same Al/O Ratio is rarely researched, especially for Hexanitrohexaazaisowurtzitane (CL-20) based aluminized explosives. In this study, we performed the underwater explosion experiments with 1.2-kilogram explosives in order to investigate the explosion energy released from CL-20 and Octogen (HMX) based aluminized explosives. The percentage of the explosive varied from 5% to 30% and it is shown that: the shockwave peak pressure (pm) grows gradually; shock wave energy (Es) continues increasing, bubble energy (Eb) increases then decreases peaking at 15% for both formulas, and the total energy (E) and energy release rate (η) peak at 20% for CL-20 and 15% for HMX. This paper outlines the physical mechanism of Eb change under the influence of an aluminium initial reaction temperature and reaction active detonation product percentage coupling. The result shows that CL-20 is superior as a new high explosive and has promising application prospects in the regulation of explosive energy output for underwater explosives.

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Research on Rapid Shaped-Charge Cutting Technology of Aircraft Damaged Thin-Wall Structures

Cited by 2 publications

References 2 publications

Dynamic Response and Parametric Studies of Elliptical Blast‐Resistant Door with the Combined Structure for Large Vacuum Explosion Containers

Dynamic Response and Parametric Studies of Elliptical Blast‐Resistant Door with the Combined Structure for Large Vacuum Explosion Containers

The effect of explosive percentage on underwater explosion energy release of hexanitrohexaazaisowurtzitane and octogen based aluminized explosives

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